A Grammatical Dictionary of Botanical Latin

hypogynous, “growing from below the base of the ovary” (Lindley); “free from but inserted beneath the pistil or gynaecium” (Jackson), i.e. situated below base of ovary or oogonium; “situated on the receptacle beneath the ovary and free from it and from the calyx; having the petals and stamens so situated” (Fernald); “inserted upon the receptacle or axis below the gynoecium and free from it - used of sepals, petals, and stamens; also (of a flower) having sepals, petals, or stamens inserted as hypogynous parts” (WIII) [> Gk. hypo-, ‘’under, beneath + gynE, woman]: hypogynus,-a,-um (adj.A), hypogynicus,-a,-um (adj.A); cf. hypomenus,-a,-um (adj.A); cf. epigynous, perigynous

- corolla vere gamopetala staminibus tubo insertis v. hypogynis in generibus perpaucis parvis per varios Ordines dispersis (B&H), the corolla truly gamopetalous, with the stamens inserted on the tybe or hyogynous in a very few small genera dispersed throughout the various Orders.

NOTE: a disc can be the “development of the torus [i.e. receptacle] within the calyx or within the corolla and stamens” (Jackson); with respect to the pistil (gynoecium) it may be epigynous, perigynous or hypogynous.

Perigynium,-ii (s.n.II), abl. sg. perigynio: any hypogynous disc (Jackson); see perigynium; “the hypogynous setae of Sedges; the flask-like calyx in which the ovary of Carex is included; also the hypogynous disk of other plants” (Lindley); “1. the hypogynous setae of sedges; 2. the flask or utricle of Carex; 3. any hypogynous disc” (Jackson).

thalamiflorus,-a,-um (adj.A): thalamifloral, i.e. having the petals and stamens arising directly and separately from the receptacle; ‘when the parts of the flowers are hypogynous, separately inserted on the thalamus’ (Jackson).

Thalamiflorae, a group of Phanerogams distinguished by such hypogynous flowers (Jackson).

- distributio in tribus et genera minus definita evadit, jam diu optime elaborata fuit a Brownio et Kunthio, etsi characteres nonnulli quibus usi sunt (e.g. setarum hypogynarum absentia v. praesentia) ex observationibus posterioribus minus certi praestant (B&H), the distribution into tribes and genera turned out to be less definite, it was for a long time best elaborated by Brown and Kunth, even if some characters which were used (e.g. the absence presence of hypogynous setae) from later review appear less certain.